Function has_arg

app/server/main.cpp:35–42

}

bool has_arg(int argc, char ** argv, const std::string & name) {
    for (int i = 1; i < argc; ++i) {
        if (argv[i] == name) {
            return true;
        }
    }
    return false;
}

void print_help() {
    std::cout